Improvement in loom-cams



@anni @Mira encuen o. WIGKERsoF LAWRENGE, AND-monash. MCGLARY, or NRTH nANDOVER, MASSACHUSETTS.-

Leam Patent No. 100,575, dated March 8,1870.

rMPovnMnN'r 1N Loom-CAMS.

The Schedule referredv to in these Letters Patent and making p'art ofthe same.

.l We, GEO. O. WIcKERscf Lawrence, and THOMAS J MCGLARY, of VNorthAndover, both infthe county of Essex,`anrl State ofllIassac-husetts,'have invented `certain Improvements in theConstruction of Gams for Working the`Heddles of Looms, and for othersimilar purposes to which such cams may be applicable, of which thefollowing,with the accompanying-drawings, is a` Specification.

Nature and. Objects of Ythe Invention.

Our invention relates to the construction of the series of cams which4work the heddles of looms, so that they may be readily changed when iti'srequired toV change the igure ofthe weaving,'without being obliged vVout removing the hub or central portion from, the shaft or from theloom. t. f In the manufactures in which fancy weaving is employed,thechanging of the heddle-cams is frequently necessary, and to do thisinloomsas usually constructed itis necessary to take the cam shaft ontof the loom,

y remove its cams and put orrothers, and then put the shaft back againand adjust it. As .the looms are usually placed close to e'ach other ina factory, this is very inconvenient, and it is in any case a very dirtyh and unpleasant job.

Description. In the drawingsi x, Figure l is a side elevation of a setof four cams, as

used for weaving four-leaf tweed.

Figure 2 is an 4end elevation ofthe same Figure 3 is a longitudinalsection of the same on the line :c :v of fig. 2; and

Figure 4 isa transverse section on the line y y of fig. 1.

A A, &c., are the several cams made of the usual external form, and B isthe hub or quill upon which all the cams are arranged in their properorder to Work the heddles, and to which they are securely attached, asis shown. t

This quill may be xed upon the shaft C, and revolve with it, or turnloosely upon the shaft and receive its rotary motion from a separategear attached'to the quill, as is shown by the dotted lines at D, in amanner similar to what is usually done in looms when a separate camshaft for the heddlesV is used. y Y.

E is a flange iixed to the quill, to which the outer cam on on'e side issecuredv by a bolt, a, and F is a movable angeupon the opposite side ofthe, cams, which. is secnredto the quill by set screws b b, and to theouter cam next to it by the bolt c.

The cams are secured to each other by the Abolts d and the dowcls andsockets e.

The exterior ofthe quill is turned truly cylindrical, and the part ofthe cam which embraces it is bored to it it nic'ely, and the inclinedsurfaces of the cam are made to approach the surface of the quilltangentially, as shown, to give an easy motion to the heddles. Theonterpart of the camsv is made of the usual form.

By this Inode of construction as many cams in a set may be used as maybe desired, and they 'may be changed by loosening the flange F andremoving the bolts a, c, and d, when they can all be slipped otf fromthe end of the quill and removed from the shaft with freedom. Anotherset of cams of any required number and order of arrangement may then beput onto the quill by a reversed operation and movable flange F broughtclose up to them and ysecured to the quill by the set screws b, and thecams secured to each other and to the flanges'E and F by the bolts anddowels, as before described.

Thus the quill B` serves as the central part of all the lcams used inthe set, Whatever may be their number or relative position to eachother.

We claim as our invention- The combination of a series of cams, A, withthe quill B and the flanges E and F, for connecting the vseries with thequill, substantially as described. 1

Witnesses:

Gao. R. ROWE, H. P. GHANDLE.

